54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
|
/*
|
||
|
|
TIME.hpp - unified representation of a time point, including conversion functions
|
||
|
|
|
||
|
|
Copyright (C) CinelerraCV
|
||
|
|
2007, Christian Thaeter <ct@pipapo.org>
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 of the
|
||
|
|
License, or (at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef UTIL_HPP_
|
||
|
|
#define UTIL_HPP_
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
#include <cstring>
|
||
|
|
|
||
|
|
|
||
|
|
namespace util
|
||
|
|
{
|
||
|
|
using std::string;
|
||
|
|
|
||
|
|
|
||
|
|
/** a family of util functions providing a "no value whatsoever" test */
|
||
|
|
inline bool isnil(const string& val)
|
||
|
|
{
|
||
|
|
return 0 == val.length();
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool isnil(const string* pval)
|
||
|
|
{
|
||
|
|
return !pval || 0 == pval->length();
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool isnil(const char* pval)
|
||
|
|
{
|
||
|
|
return !pval || 0 == std::strlen(pval);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace util
|
||
|
|
#endif /*UTIL_HPP_*/
|